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Showing results for tags 'sinemurian ?'.
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While visiting the caves of Cerdon in the departement of Ain, i bought that ammonite. It hadn't name but i was said that most of the ammonites sold there were from the asteroceras family. I don't know more about it except that if it is an asteroceras it has chances to be from the Sinemurian (-200 to -191 MY). It is about 11 cm of diameter